Bathtub



April 26, 1949. R E REST'ALL 2,468,347

BATHTUB Filed Nov. 6, 1945 BJI/@M42 44m Patented Apr. 26, 1949 UNITED STATES PATENT CFFICE BATHTUB Robert E. Restall, Hamilton, Ontario, Canada Application November 6, 1945, Serial No. 626,959

2 Claims. 1

This invention relates to metal ware and more particularly to bathtubs.

A main object of the invention is to provide a novel and improved metal ware receptacle characterized by lightness in Weight, low cost and desirable thermal characteristics.

A further object of the invention is to provide an improved metal ware receptacle of light construction whereby extreme ease in installation is provided and of low thermal mass whereby heat is conserved in bringing the receptacle to a desired temperature, the receptacle being insulated against excessive heat losses.

Further objects and advantages of the invention will appear from the following description and claims, and from the accompanying drawings, wherein:

Figure 1 is a top view of a bathtub constructed in accordance with this invention.

Figure 2 is a cross-sectional view taken on line 2-2 of Figure 1.

Figure 3 is an end view of the bathtub of Figure 1.

Referring to the drawings, l designates an inner shell, which may be of pressed metal, and 2 designates an outer shell of similar metal, said inner and outer shells being joined at their rims by welding to form a bathtub structure of generally conventional size and shape. The intervening space between inner shell l and outer shell 2 is filled with insulation material 3 such as rock wool or the like.

At the forward end of the tub, inner shell l and outer shell 2 are contiguous over a relatively narrow region forming a channel-shaped recess 4 providing access to the drain opening 5 and the overow opening 6 for the installation therein of appropriate plumbing iixtures.

The bottom portion of outer shell 2 is formed with a plurality of transversely corrugated areas providing bearing legs for the tub, the corrugations providing increased strength in the pressed metal shell at the bearing areas. Any desired number of corrugated areas may be provided although two such transverse areas will be ordinarily suflicient.

Inner shell I is formed with a top extension portion 8 having a vertical depending side wall portion 9 providing a rectangular contour for the tub, which as shown in the embodiment of Figures l, 2 and 3, is tted into a rectangular recess. Depending side walls may be provided as required when the tub is positioned in other locations where a rectangular recess is not available.

The hollow construction of the tub provides a receptacle of minimum weight and of minimum thermal mass. The lightness of the receptacle substantially reduces the labor of installation since the tub can be easily handled by one or two workmen. The low thermal mass provides a saving in heat since only a small amount of heat is extracted from the water in the tub to raise its temperature to that of thermal equilibrium. The insulation in the space between the inner and outer shells minimizes the heat losses, thereby effecting a further saving in heat. The hollow construction provides numerous additional advantages in fabrication, shipping and installation of the tub.

While described above in connection with a bathtub, the structural features herein disclosed may be employed with equal advantage for other metal ware receptacles such as wash basins, sinks, hospitals fixtures, and the like.

While a speciiic embodiment of a metal ware receptacle has been disclosed in the foregoing description, it will be understood that numerous modifications within the spirit of the invention may occur to those skilled in the art. Therefore it is intended that no limitations be placed on the invention other than as defined by the scope of the appended claims.

What is claimed is:

1. A bath tub comprising an inner shell of pressed metal, an outer shell of similar metal joined to said inner shell, said shells being spaced over a major portion of opposing areas, and insulating material filling said space, said outer shell having an indented portion adjacent one end thereof providing a channel shaped recess for receiving inlet and outlet connections for said tub.

2. A bath tub comprising an inner shell of pressed metal, an outer shell of similar metal joined to said inner shell, said shells being spaced over a major portion of opposing areas, and insulating material filling said space, said outer shell having an indented portion adjacent one end thereof providing a channel shaped recess for receiving inlet and outlet connections for said tub, said outer shell also having a plurality of corrugations extending transversely across the bottom and adjacent the ends thereof, said corrugations being of substantially less depth than said indented portion, and projecting outwardly beyond the bottom surface of said outer shell to provide a bearing support for said tub.

ROBERT E. RESTAIL.

REFERENCES CITED UNITED STATES PATENTS Name Date Templeton Jan. 3, 1893 Number FOREIGN PATENTS Country Date Great Britain Mar. 28, 1894 Number 

